Chemistry 101 Midterm Chapters 1–4 2026/2027 | 100+ Questions & Answers | Scientific Method, Measurements, Matter, Atomic Theory & Periodic Table | Ivy Tech Community College

This comprehensive Chemistry 101 Midterm Chapters 1–4 2026/2027 study resource contains 100+ multiple-choice and true/false questions with answers across 32 pages for students preparing for an introductory chemistry midterm at Ivy Tech. The material progresses from the scientific method and foundations of chemistry through measurement, significant figures, dimensional analysis, density, properties and states of matter, energy and temperature, atomic structure, ions, isotopes and periodic-table organization. The cover page specifically identifies the resource as an Ivy Tech Chemistry 101 midterm covering Chapters 1–4 and presents it as a question-and-answer exam-preparation document. The opening section provides detailed practice with the scientific method and fundamental principles of chemistry. Questions distinguish observations, hypotheses, experiments, scientific laws and scientific theories while testing students on quantification and experimental reasoning. Historical concepts include Antoine Lavoisier and the law of conservation of mass, John Dalton and atomic theory, and the relationship between atomic theory and conservation of matter. Students also review chemistry as the study of matter through the behavior of atoms and molecules. A major portion of the document focuses on measurements and quantitative problem solving, including significant figures, exact numbers, conversion factors, dimensional reasoning, scientific notation and density calculations. Students practice identifying significant digits, applying significant-figure rules to calculations, converting extremely small measurements into scientific notation and determining whether an object will float based on its calculated density relative to water. This section develops the numerical skills needed for later stoichiometric and quantitative chemistry work. The matter, energy and physical versus chemical properties section examines pure substances, compounds, homogeneous mixtures, physical properties, chemical properties and physical and chemical changes. Questions use examples such as salt water, sugar, ice, gallium melting and copper tarnishing to test classification skills. The resource also covers energy as the capacity to do work, conservation of energy, endothermic and exothermic processes, heat, temperature, absolute zero and conversions between Celsius and Kelvin. The later chapters concentrate on atomic structure and atomic theory. Students review protons, neutrons and electrons; neutral atoms and charged ions; cations and anions; atomic number; isotopes; and electron counts in ions. Rutherford's nuclear model and the gold-foil experiment are included, with questions emphasizing that the nucleus contains the atom's positive charge and most of its mass while much of the atom consists of empty space occupied by electrons. The final portion provides focused preparation on the periodic table and elemental classification. Questions examine metals and nonmetals, main-group elements, noble gases, alkaline-earth metals, elemental symbols and periodic-table organization by increasing atomic number. Examples include xenon, barium, potassium, sulfur, cesium, beryllium, argon and tin, requiring students to connect elemental position with classification, ionic charge and chemical notation. The topics are consistent with the foundational material typically presented in introductory college chemistry textbooks, including Nivaldo J. Tro's Chemistry: A Molecular Approach, particularly the early treatment of scientific thinking, measurement, matter, atomic theory and the periodic table. The uploaded material is best used as a midterm practice and active-recall resource alongside the assigned Ivy Tech textbook, lecture notes and instructor materials. Students should verify individual answers when necessary, since practice banks can contain typographical or answer-key errors. Relevant students: This document is particularly relevant to Ivy Tech Community College students enrolled in Chemistry 101 or an equivalent introductory/general chemistry course and preparing for a Chapters 1–4 midterm. It can also support nursing and pre-nursing students, health sciences and allied-health students, biology majors, STEM students and learners completing introductory chemistry prerequisites who need additional practice with scientific reasoning, chemistry calculations, matter, atomic structure and periodic trends. 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